/*
 * May 29, 2005
 */
package traer.physics;

/**
 * @author Jeffrey Traer Bernstein<P>
 * <a href="http://www.cs.princeton.edu/~traer/physics/" target="blank">http://www.cs.princeton.edu/~traer/physics/</a>
 */
public interface Force {

    public void apply();

    public boolean isOff();

    public boolean isOn();

    public void turnOff();

    public void turnOn();
}
